The bitter fight between the former owners of Goose Creek — a legendary East Hampton mansion — ​will finally ​be heard ​in ​Suffolk County Supreme Court next Wednesday.

Bob Felner is flying in from California for the hearing in Riverhead, LI, over claims that his former business partner, Bryan Bantry — an agent for models, photographers and makeup artists — ​cheated him of profits associated with the massive house.​

The mansion, complete with a 110-seat screening room, rented for more than $500,000 per summer.

It sold two years ago for $10.55 million, but the proceeds from the sale have been held in escrow pending the outcome of the court case.

Felner, who claims he is owed millions of dollars, has had forensic accountants pouring over 16 years of financial records. His lawyers also deposed publicist Peggy Siegal, because she sold her business to Bantry and now works for him.

Bantry maintains that Goose Creek was a money-loser and that Felner is entitled only to a share of the losses he incurred.